Liver

Liver is a nutrient-dense food that supports vitamin A, B12, and copper needs with modest weekly servings.

Strong consensus

For vitamin a intake and bioavailability.

Sourced from the doctors, PhDs and clinicians behind Entrain. Updated

The strongest voice

“For preventing food intolerances, we want to raise our children from an early age eating liver once or twice a week and eating the yolks of eggs with an average egg consumption of one, two, maybe even three a day”

a nutritional sciences PhD · source video · 00:08:50

In their own words

One faithful sentence per source, linked to the moment it was said; quiet chips mark where money is involved.

a nutritional sciences PhD recommend
“Eating 4 to 6 ounces of freshly cooked liver once a week meets your needs for vitamin A, B12, and copper for the entire week.”

a nutritional sciences PhD · source video · 00:01:10

a licensed acupuncturist and clinician-educator recommend
“Eating liver provides preformed retinol, the active form of vitamin A important for skin health and acne reduction.”

a licensed acupuncturist and clinician-educator · source video · 00:04:40

a GP with a Master of Public Health against
“To avoid risk of hypervitaminosis A while still gaining benefits from liver's fat soluble vitamins.”

a GP with a Master of Public Health · source video · 00:10:00

a registered nutritional therapist recommend
“Copper activates the enzyme that moves iron around the body, so low copper can cause low iron.”

a registered nutritional therapist · Instagram reel · 00:00:40

a certified naturopath recommend
“Liver is the richest source of vitamin B6, which is linked to doubling the odds of conception, raising pregnancy chances by 40%, and cutting miscarriage risk by half.”

a certified naturopath · Instagram reel

a certified naturopath recommend
“Liver provides retinol, copper, choline and bioavailable iron, nutrients essential for reproduction.”

a certified naturopath · Instagram reel

Worth discussing with your GP, especially if you take medication or are pregnant. Entrain describes what is publicly taught; it does not prescribe.

The research our sources reach for

Peer-reviewed papers cited alongside this verdict, linked straight to PubMed.

On 5 September 2026, 340 studies in the library were compared by identifier with 72,389 Retraction Watch entries. No matching notices were found. This check does not establish study quality or validate a health claim.

Methylated b vitamins

Methylated B vitamins can be especially helpful for those with methylation pathway issues.

Strong consensus

“some people take methylated B vitamins to prevent a hangover ... something else which is very gentle and not going to cause any problems will be try methyl glycine or it's called TMG”

a molecular biology PhD · TikTok video

Grass-fed beef

Grass-fed beef offers better nutrition and supports soil and animal health.

Strong consensus

“grass-fed beef insane but how they do the research they take 100 head they put 50 on grain leave 50 on on grass when the ones on grain get fat they kill them all guess what the ones that grass are not as fat or lean”

a licensed acupuncturist and clinician-educator · source video · 00:14:32

Water filtration

Filtering water is a simple way to reduce exposure to unwanted substances.

Strong consensus

“water needs to be filtered and remember in order to filter toxins like that out of the water we must use a reverse osmosis or a distillation type filter”

a clinical nutritionist · source video · 00:06:00